Protective Aluminide Coatings for Refractory Metals
| العنوان: | Protective Aluminide Coatings for Refractory Metals |
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| المؤلفون: | Anke S. Ulrich, Mathias C. Galetz |
| المصدر: | Oxidation of Metals. 86:511-535 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Diffusion, Metallurgy, Metals and Alloys, Tantalum, Niobium, Refractory metals, Intermetallic, chemistry.chemical_element, 02 engineering and technology, Tungsten, 021001 nanoscience & nanotechnology, 01 natural sciences, Inorganic Chemistry, chemistry, Chemical engineering, Molybdenum, 0103 physical sciences, Materials Chemistry, 0210 nano-technology, Aluminide |
| الوصف: | Refractory metals are promising materials for high-temperature applications. However, these materials exhibit low oxidation resistance at elevated temperatures. To overcome this problem, aluminum diffusion layers were applied to molybdenum, niobium, tantalum, and tungsten using a pack cementation process. The coated samples were characterized using EPMA, optical microscope, and XRD. Homogeneous diffusion layers of different intermetallic phases were identified. The observed phases were in agreement with phase predictions made using thermodynamic calculations. Oxidation tests at 1300 $$^{\circ }$$ C for up to 100 h in synthetic air were carried out on uncoated as well as aluminized samples. The oxidation kinetics were analyzed via TGA measurements. After oxidation, the formed oxides and the remaining aluminum diffusion layers were characterized. It was found that an additional halogen treatment can significantly reduce oxidation attack of the substrate and support the formation of a continuous protective Al $$_2$$ O $$_3$$ layer. |
| تدمد: | 1573-4889 0030-770X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::02b507c076483dbf98318f571b673037 https://doi.org/10.1007/s11085-016-9650-z |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........02b507c076483dbf98318f571b673037 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15734889 0030770X |
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